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On 10 November 2015, Microsoft released a security update to mitigate a security vulnerability in BitLocker that allowed authentication to be bypassed by employing a malicious Kerberos key distribution center, if the attacker had physical access to the machine, the machine was part of a domain and had no PIN or USB flash drive protection.
One can plausibly claim that such a device or partition has been wiped to clear personal data. Portable or "traveller mode" means the encryption software can be run without installation to the system hard drive. In this mode, the software typically installs a temporary driver from the portable media. Since it is installing a driver (albeit ...
Since disk encryption generally uses the same key for encrypting the whole drive, all of the data can be decrypted when the system runs. However, some disk encryption solutions use multiple keys for encrypting different volumes. If an attacker gains access to the computer at run-time, the attacker has access to all files.
Additionally, it may be possible to reboot the computer into an attacker-controlled operating system without cutting power to the drive. When a computer with a self-encrypting drive is put into sleep mode, the drive is powered down, but the encryption password is retained in memory so that the drive can be quickly resumed without requesting the ...
Multiple keys: Whether an encrypted volume can have more than one active key. Passphrase strengthening : Whether key strengthening is used with plain text passwords to frustrate dictionary attacks , usually using PBKDF2 or Argon2 .
Pre-boot authentication can by performed by an add-on of the operating system like Linux Initial ramdisk or Microsoft's boot software of the system partition (or boot partition) or by a variety of full disk encryption (FDE) vendors that can be installed separately to the operating system. Legacy FDE systems tended to rely upon PBA as their ...
This means that an attacker who can authenticate to Windows XP as LocalSystem still does not have access to a decryption key stored on the PC's hard drive. In Windows 2000, XP or later, the user's RSA private key is encrypted using a hash of the user's NTLM password hash plus the user name – use of a salted hash makes it extremely difficult ...
Disk encryption is a special case of data at rest protection when the storage medium is a sector-addressable device (e.g., a hard disk). This article presents cryptographic aspects of the problem.